Which lines in this excerpt from thomas hardy's "the darkling thrush" signify hope in the midst of despair?

i leant upon a coppice gate
when frost was spectre-gray,
(and winter's dregs made desolate
the weakening eye of day.
the tangled bine-stems scored the sky)
like strings of broken lyres,
(and all mankind that haunted nigh
had sought their household fires.)

the land's sharp features seemed to be
the century's corpse outleant,
his crypt the cloudy canopy,
the wind his death lament.
(the ancient pulse of germ and birth
was shrunken hard and dry,)
and every spirit upon earth
seemed fervourless as i.

(at once a voice arose among
the bleak twigs overhead
in a full-hearted evensong)
of joy illimited;
(an aged thrust, frail, gaunt, and small,
in blast-beruffled plume,
had chosen thus to fling his soul
upon the growing gloom.)

answer choices are the ones in parentheses, and you can choose more than 1 answer.